Microcrystallography with an X-ray waveguide

2000 ◽  
Vol 33 (5) ◽  
pp. 1231-1240 ◽  
Author(s):  
M. Müller ◽  
M. Burghammer ◽  
D. Flot ◽  
C. Riekel ◽  
C. Morawe ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Small Angle ◽  
European Synchrotron Radiation Facility ◽  
Small Angle Scattering ◽  
Beam Size ◽  
X Ray ◽  
Multilayer Mirror ◽  
Angle Scattering ◽  
Polymeric Samples

A waveguide microdiffraction setup is described for an undulator beamline at the European Synchrotron Radiation Facility. The composite optics consists of a waveguide, which confines the beam vertically, and a horizontally focusing multilayer mirror. A beam size of about 0.1 × 3 µm (vertical × horizontal) at λ = 0.095 nm has been obtained. The sample stage comprises a three-axis gantry with micrometre precision and a three-axis piezo-scanner with about 0.1 µm repeatability. Diffraction experiments are demonstrated for selected inorganic and polymeric samples. Possibilities for scanning diffractometry and small-angle scattering experiments are discussed.

Information retrieval from X-ray small-angle scattering with polychromatic (`white') synchrotron radiation

1983 ◽  
Vol 16 (1) ◽  
pp. 42-46 ◽  
Author(s):  
O. Glatter ◽  
P. Laggner
Keyword(s):  
Synchrotron Radiation ◽  
Small Angle ◽  
Particle Shape ◽  
Structural Information ◽  
Small Angle Scattering ◽  
Radius Of Gyration ◽  
X Ray ◽  
Angle Scattering ◽  
Slit Length ◽  
Hinge Bending

The possibilities of obtaining structural information from X-ray small-angle scattering experiments with `white' polychromatic synchrotron radiation using line collimation are investigated by numerical simulation. Theoretical scattering curves of geometrical models were smeared with the appropriate wavelength distributions and slit-length functions, afflicted by statistical noise, and then evaluated by identical methods as normally used for experimental data, as described previously [program ITP; Glatter (1977). J. Appl. Cryst. 10, 415–421]. It is shown that even for a wavelength distribution of 50% half width, the information content is not limited to the parameters derived from the central part of the scattering curves, i.e. the radius of gyration and the zero-angle intensity, but also allows qualitative information on particle shape via the distance distribution function p(r). By a `hinge-bending model' consisting of two cylinders linked together at different angles it is demonstrated that changes in the radius of gyration amounting to less than 5% can be detected and quantified, and the qualitative changes in particle shape be reproduced.

Soft X-Ray Small-Angle Scattering by Polystyrene Latexes Using Synchrotron Radiation

1978 ◽  
Vol 44 (4) ◽  
pp. 1314-1322 ◽  
Author(s):  
Katsuzo Wakabayashi ◽  
Akito Kakizaki ◽  
Yasuo Siota ◽  
Keiichi Namba ◽  
Kimio Kurita ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Small Angle ◽  
Small Angle Scattering ◽  
X Ray ◽  
Angle Scattering

X-ray diffuser

2004 ◽  
Vol 37 (5) ◽  
pp. 841-842 ◽  
Author(s):  
Yoshiki Matsuura ◽  
Izumi Yoshizaki ◽  
Masahiko Tanaka
Keyword(s):  
Synchrotron Radiation ◽  
Small Angle ◽  
Small Angle Scattering ◽  
Beam Divergence ◽  
Amorphous Boron ◽  
Boron Powder ◽  
X Ray ◽  
Peak Finding ◽  
Angle Scattering

Amorphous boron powder was used as an X-ray diffuser, making the beam divergence of synchrotron radiation broader by simple insertion of the diffuser into the beam. The diffuser has been used successfully for the purpose of easy peak finding on a four-circle diffractometer. The diffuser effect is considered to be brought about by small-angle scattering from the boron powder.

Neutron and X-ray small-angle scattering with Fe-based metallic glasses

1988 ◽  
Vol 97 ◽  
pp. 227-230 ◽  
Author(s):  
P. Lamparter ◽  
S. Steeb ◽  
D.M. Kroeger ◽  
S. Spooner
Keyword(s):  
Metallic Glasses ◽  
Small Angle ◽  
Small Angle Scattering ◽  
X Ray ◽  
Angle Scattering

Dimensions de micelles mixtes de p-alkylbenzènesulfonates par diffusion central des rayons X

1977 ◽  
Vol 10 (1) ◽  
pp. 37-44 ◽  
Author(s):  
C. Cabos ◽  
P. Delord ◽  
J. Rouviere
Keyword(s):  
Small Angle ◽  
Small Angle Scattering ◽  
Micellar Solutions ◽  
Probable Structure ◽  
X Ray ◽  
Absolute Scale ◽  
Angle Scattering ◽  
Scattering Measurements ◽  
Two Component ◽  
Most Probable Structure

The structure of micellar solutions is determined from X-ray small-angle scattering measurements on an absolute scale. The most probable structure is chosen by comparison with spherical cylindrical and lamellar models. This method is applied to two-component micelles and it is possible to follow the variation of micellar dimensions when the concentration of each component is varying.

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